What was found
FWD CARGO COMPARTMENT HORIZ PRESSURE DECK UPPER SURFACE AT FRAME 40/41 IS CORRODED AT THE SPLICE. REPAIRED PER FEDEX EA 6-5310-136722, TITLE " FUSELAGE - PRESSURIZED FLOOR BETWEEN FR 39 AND FR 40 AT Y-95.3". REMOVED AND RE-INSTALLED 1 EA. SUPPORT BRACKET AT FR 40 IN THE A/C BAY IAW SRM 51-40-21, PARA'S 5, 6 AND 7. REMOVED AND RE-INSTALLED WING CENTER BOX BOTTOM SKIN VAPOR SEAL ; RT FWD SIDE IAW SRM 51-40-21, PARA 5. REMOVED AND RE-INSTALLED 2 EA. VAPOR SEAL STRAPS; RT UPPER AND CENTER IAW AMM 28-13-21-04, PG 4. INSTALLED 2 EA. VAPOR SEAL LOWER CENTER STRAPS REF AMM 28-13-21-01. PERFORMED EXTERNAL VENTILATION TEST IAW AMM 28-13-00-05. TESTED GOOD.